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So many of you could answer many of the questions I get daily if only you knew where to look. So instead of answering a specific question this month, I want to share with you some of the reference books we use at Â鶹Éç. Hopefully this will help you help yourselves.

Your local library (and librarian obviously) can be a tremendous asset to you in your search. Most good-sized libraries have online catalogs that can make your quest easier. But before you schlep to the library, I’d suggest you look for an online source-it saves time. On the other hand, if you’re a novice at researching, a helpful librarian can save you lots of time (and when it comes to business, time of course, is money).

Wherever your search takes you, be sure to check out the following websites and books in your library reference section:

• contains thousands of sources, including books, magazine articles, stats and industry data. Articles, trade shows and conventions are sorted by industry.
• lists thousands of trade associations, offering contact information and vital stats. This is crucial to all entrepreneurs seeking information about a particular industry.
• The offers access to online information on more than 1.6 million private and public U.S. and Canadian companies, their sales, their number of employees and other important information. This is helpful when checking out potential partners, seeking clients or customers, or “spying” on your competition. Visit the site for subscription information.
• offers a similar service with some free sample information.
• Demographic information (crucial to learning about your target market) can be found in and .
• For advertising costs in any of the nation’s magazines and newspapers, check out the reference books from .
• If you’re looking for information on government contracting opportunities, visit (formerly Commerce Business Daily).
• has thousands of citations on more than 1,000 topics, listing directories, encyclopedias, yearbooks and trade groups.
• Other important reference books include , , and the.
• One of my favorite resources (and the most useful) is the Thomas Register of American Manufacturers. It lists thousands of manufacturers of virtually every product produced in the United States. You can search it online .
• The is also an amazing resource and provides and huge amount of information for entrepreneurs.
• And on an altogether subjective note, if you want to read about starting or growing a business, learn about raising money, or learn some marketing tips, don’t forget the site you’re on. We’ve got a comprehensive Small Business Encyclopedia and an extensive set of How-To Guides. You can also check out our books at and .

Rieva Lesonsky is a small-business expert and a senior vice president and editorial director at Â鶹Éç Media Inc.